#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#define BOLD_GRAY "\033[1;90m"
#define RED "\033[0;31m"
#define WHITE "\033[0;37m"
#define RESET "\033[0m"

// Размер буфера для чтения
#define BUFFER_SIZE 4096
// Максимальный размер файла для полного анализа (1 ГБ)
#define MAX_FILE_SIZE (1024 * 1024 * 1024)

int module_10_run(const char *filename) {
    char log_msg[1024];

    FILE *file = fopen(filename, "rb");
    if (!file) {
        snprintf(log_msg, sizeof(log_msg), BOLD_GRAY " Library libc: " RED "File type not recognized: %s" RESET, strerror(errno));
        printf("%s\n", log_msg);
        return 1;
    }

    // Получаем размер файла
    fseek(file, 0, SEEK_END);
    long size = ftell(file);
    fseek(file, 0, SEEK_SET);

    if (size > MAX_FILE_SIZE) {
        snprintf(log_msg, sizeof(log_msg), BOLD_GRAY " Library libc: " RED "File too large: %ld bytes" RESET, size);
        printf("%s\n", log_msg);
        fclose(file);
        return 1;
    }

    // Читаем первые BUFFER_SIZE байт
    unsigned char *buffer = malloc(BUFFER_SIZE);
    if (!buffer) {
        snprintf(log_msg, sizeof(log_msg), BOLD_GRAY " Library libc: " RED "Memory allocation failed" RESET);
        printf("%s\n", log_msg);
        fclose(file);
        return 1;
    }

    size_t read_bytes = fread(buffer, 1, BUFFER_SIZE, file);
    fclose(file);

    if (read_bytes == 0) {
        snprintf(log_msg, sizeof(log_msg), BOLD_GRAY " Library libc: " RED "File type not recognized: Empty file" RESET);
        printf("%s\n", log_msg);
        free(buffer);
        return 1;
    }

    // Проверяем, текстовый ли файл
    int is_text = 1;
    for (size_t i = 0; i < read_bytes; i++) {
        if (buffer[i] == 0) {
            is_text = 0;
            break;
        }
        if (buffer[i] < 32 && buffer[i] != '\n' && buffer[i] != '\r' && buffer[i] != '\t' && buffer[i] != '\x1B') {
            is_text = 0;
            break;
        }
    }

    if (is_text) {
        char *text = malloc(read_bytes + 1);
        if (!text) {
            snprintf(log_msg, sizeof(log_msg), BOLD_GRAY " Library libc: " RED "Memory allocation failed" RESET);
            printf("%s\n", log_msg);
            free(buffer);
            return 1;
        }
        memcpy(text, buffer, read_bytes);
        text[read_bytes] = '\0';
        snprintf(log_msg, sizeof(log_msg), BOLD_GRAY " Library libc: " WHITE "Size: %ld bytes, First %zu bytes (text): %.100s..." RESET,
                 size, read_bytes, text);
        free(text);
    } else {
        snprintf(log_msg, sizeof(log_msg), BOLD_GRAY " Library libc: " WHITE "Size: %ld bytes, First %zu bytes (binary)" RESET,
                 size, read_bytes);
    }
    printf("%s\n", log_msg);
    free(buffer);
    return 0;
}
